JP offers a different underground story than the other cities of the world
It is seemingly more isolated, silent, but equally, if not more, vibrant thanks to the passengers and the color that they bring along with their cultural background. A salaryman, a sumo, an elderly lady with her kimono, a student going home, or just a modern Japanese woman with her hat and elegant jewelry...
The Japanese metro experience has it all with just a tinge of blues and refinement to go along.